I was half-assedly fitted to my new Cervelo R3. With my lack of road bike knowledge, I was persuaded by the salesman to go with the size 54, but I am now so stretched out, I feel like I'm riding Graeme O'bree's superman position. I'm feeling a lot of back and neck pain if I ride on the hoods, so I've resorted to riding mostly on the bar tops.

The thing is I have really long legs and a short torso. I'm considering changing frame size but I'm not sure if the next size down 51 will be okay or if I should try and make a size 48 fit. The top tube of the 48 seems to be right on, however, I'm a little concerned about potential saddle and head tube height issues. I know this size was intended for much shorter people.

My measurements and fit according to the Competitive Cyclist calculator are as follows:


By the way, I'm not keen on really short stems due to the nervous/twitchy ride and I'm above average in flexibility, just short in the top half! I'm riding with the stem slammed on the size 54, and I feel like I could go lower if I had to, but I don't want to sacrifice too much comfort. My saddle height is 75cm with about 6cm of setback. I think I need at least this much setback due to my long femurs; so simply changing to a straight post in place of my Dorico will probably not improve things.